Wire drawn brush machine



July 15, 1952 R. B. WILSON WIRE DRAWN BRUSH MACHINE l2 SheetsSheet 1Filed May 27, 1948 w R S mm w W 5 WM N NB 5 @969 m H c m: N9 m NT. 0 o oR m .n H o m: Q o 02 u u o v: o #9 8 00 m: S s

x J wj om B: W J o QM m oQ 27m 0 o 9 N :2 \NE W 5 m. 2 Z o mm 5 \8 31 @Qmm Q2 91 5 M 8+ July 15, 19 R. B. WILSON WIRE DRAWN BRUSH MACHINE 12Sheets-Sheet 2 Filed May 27, 1948 m mm 0 Q N am om mw m on o (%M' ,Q W

ATTORN YS July 15, 1952 R. B. WILSON WIRE DRAWN BRUSH MACHINE l2Sheets-Sheet 4 Filed May 27, 1948 VENTOR RICHARD ILSON 6% 4 ,QLM

ATTORNEYS y 15, 1952 R. B. WILSON 2,603,536

WIRE DRAWN BRUSH MACHINE Filed May 27, 1948 12 Sheets-Sheet 6 F l G. 7

INVENTOR RICHARD B W ILSO N ATTORN YS July 15, 1952 R. B. WILSON WIREDRAWN BRUSH MACHINE 12 Sheets-She et 7 Filed May 27, 1948 FIGJQ FIG.I4

FIG.8

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mm w y 15, 1952 R. B. WILSON 2,603,536

WIRE DRAWN BRUSH MACHINE Filed May 27, 1948 12 Sheets-Sheet 8 FIGJSFIGJ6 FIGJO HIHIIHIIIIHIIIilIHHiHIIM F I G. l 3

INVENTOR RICHARD B. WILSON 9 M ATTORNEYS July 15, 1952 R. B. WILSON2,603,536

WIRE DRAWN BRUSH MACHINE Filed May 27, 1948 12 Sheets-Sheet 9 FIG." 72

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I64 I57 f 1 o PIGZ p o o I Q: l I ll K////////// /7////I/////////////////////// 7 T INVENTOR |63a RICHARD B. WILSON E A I'TOTQN S July 15, 1952 R. B. WILSON WIRE DRAWN BRUSH MACHINE l2 Sheets-Sheet10 Filed May 27, 1948 FIG.23

FIG.2I

FIG. 24

I I I WOZIVE ES y 15, 1952 R. B. WILSON 2,603,536

WIRE DRAWN BRUSH MACHINE Filed May 27, 1948 12 Sheets-Sheet l2 FIG.27

INVENTOR RICHARD B WILSON ATTORNEYS Patented July 15, 1952 v UNITEDSTATES PATENT OFFICE WIRE DRAWN BRUSH MACHINE Richard B. Wilson,Springfield, -Mass, assignor to Better Brushes, Inc., Palmer, Mass acor-.- poration of Massachusetts Application May 27, 1948, SerialNo.:29,47s

(0.1.. zoos-.6)

. out from a metal strip, and, when the middle of a bundle-o'f bristlesis positioned over the face of a -hole, this small piece or staple,which .is only'slightly longer than the diameter of the hole, is forc'eddown on top of the bristle bridge to drive'itinto the hole asthestapleiis:wedged in behind it. In this manner a :tuft of bristies isformed and anchored onthe brushback;

ilnsteadof using-such staples or other small cut pieces of metal, thenew machine of themventlon uses only a single binder thread, such aswire,- to secure all the tufts in an entire-brush and "make a type ofbrush which is usuallyzmade by hand. The operation is substantiallyauto.- matic, involving coordinated details which will need to beexplained by reference to the accompanying drawings for a clearunderstanding of the structure and mode of operation.

'-In-the drawings,

Fig. 'il-is-a pictorial front elevational view of the ewm n Figi ais asirri'ilar but "enlarged vi'ew of its stitching end; i 4

Figs. Band-4 combine to form afront elevatlonal 'view'; I

'Figs.'-5 and 6 are edge and plan views respectively of-a prefererdbrushback;

Fig. 7 is a rear'viewo'f the stitching-end shown in-Fig. 2; v

Fig.8 is a vertical cross sectional view of'the bristle magazine andrelated feed mechanism;

Fig.1; is a -top plan view of Fig. 8 but additionany showingbristle-holding weights Fig. 1015a side elevational view of the maga-'zine and. related -ieed drive mechanism Fig. 11 is I an end-elevationofthe stitching end of the' machine with some parts omitted for-pure--poses of clarity;

Fig. '12 is an end view of the :feed mechanism drive -sprocket;

lilg. 1 3 :is an elevation partly in section, of a retractablehandleflevice driven by thesprocket;

Fig. 14 is .atpl-an view of. the two bristle feed rollers;

151i *a i'e1elatiQn of'the bristle clamp n and feed device;

Fi v16 r s section taken ine 146 16 Q i8- .15; 1 i

2 Fig. 17 is a rear view of an element of te bristle clamping and feeddevice; v V

Fig. 18 is a cross section of a portion of one of "the runners of theelement shown in Fig. 17

and of an associated spring detent button device disposed inits way Fig.19 is a view similar to Fig. 15 but showing the bristle clamping andfeed device in its foremost extended-position;

Fig. 20 is a front elevational view of the bristle feed mechanism;

Fig. 121 is a verticalcross section of the needle drive postand wirestitching mechanism-y Fig. 22 is an elevation of the post Shown in Fig.21;

Fig. 23. is aplan view of the :top of the post cap;

n edl Fig. 2d isia diagrammatieview of the needle threaded and at thetop of itsstroke;

Fig. "25 is a pictorial elevational view of the indexing or drive end ofthe machine;

Fig. 26 isa'cross sectional elevation taken-on line 26-:26 of Fig. '25and Fig. 27 1s a diagram showing the interconneci tions'betweenelectrically operated devices on the machine.

The machineshown in the drawings is for making what is known as a wire.drawn'b'rushs It is the type ofwell-known brush in which all the tuftsare held in holes extending through the brush :back by one continuousbinding wire. This wire has;a loop formed in it at each hole. Thebristles of each tuft extend through the loop of each hole so that whenthe wire is drawn ti htly all the bristles are held in their holes bythe one wire and without other binding means. This type of brush is ofhigh quality and isusuall-y made by hand. The purpose of the machine'isto make such brushes in what is substantiallya full automatic machineoperation and thereatures of invention involved will appear from thedescri ti n a d-b inted 01min h 'c im' Asshown inH-Fig. 1, the framework(if themach ne onsists of table or deck 10, its legs 'I c oss members12. mm latform T an fill t bra e p at s 1 4- On ,andatone end of thisframework, as a part of the super-structure above deck 10, is astationary shaft l5 supportedby clamp [Band clamp stand ll. v

This shaft 15 supports a clamping assemblyflii .adaptedto holda singlebrush back. Brush back clamping assembly l8 (Fig. 2) is slidable'andpartially rotatable on stationary shaft 15 and has a tail stock l9 whichfits over the shaft .Tail

7 5mm: I8 is tied ,toa head. stock 1211 by register aeoasse shaft 2|.The head stock supports a main clamp 22. Main clamp 22 is held down inclampin position by lever operated cam 23. Shaft 2| supports aregistering device 24, rotatable on it. Pins 25 are provided onregistering device 24 to correctly align the brush back within the clampin a manner later to be described. Tail stock i9 carriesa small slidableshaft 26 on one end of which are two fine points 21 (Fig. 4) adapted tobe driven and held by a spring 26a into one end of the brush back tosupport and secure it rigidly within the clamping device. A wedge 33 isadapted to slide on the tail stock [9 and ,wedge pin 26b on shaft 26(Fig. 4) away from stationary pin 1911 on the tail stock so that spring26a is compressed and fine, points 21 moved to the right of the positionindicated in Fig. 4. Head stock 20,'whichis set-screwedonto the end ofthe ma chine's main shaft 28 (Fig. 2), is rotatable and slidable andsupported in'a manner to" beexplained. e

Clamping assembly I8 is adapted to receive a brush-back 29 (Fig. 5, Fig.6), pierced all the way through the back by holes 30 and by elongatedslots 3 I which slotsmaterially aid in keep}- ing the brush clean asdoes the curvature of the brush back. The elongated slots, however, arenot necessary to the functioning of the machine. The rear side of thebrush back is grooved with recesses (not shown) around its periphery'and along-the hole lines. The handle portion'32 of the brush'back 29may be curved as shown (Fig. to provide a comfortable grip.

"A brush back 29 (Fig. 2) is inserted in the machine in the followingmanner. Wedge 33 (Fig. 4) is moved upward to wedge pin 26b on shaft 26away from stationary pin l9a on the tail stock and move the fine'points21 to the right of the position indicated in Figsj2 and 4. Spring 2611is, of a course, compressed in doing so. Main clamp 22 (Fig. 2) is thenlifted so the handle of the brush back 29 can be inserted underneath it.Main clamp 22 is so positioned as to bear upon the throat of the handle.Registering device 24 is then manually pivoted about the sleeveindicatedon shaft 2| and pins 25 are inserted into two. of the holes inthe brush back tofcorrectly align the latter in the clamping device.Lever operatedcam 23 is then pivoted into place above main-clamp 22 androtated to bring pressure to bear upon the end of the main clamp.

' With registering device 24 still in position, the wedge held slidableshaft26 is released by pulling down wedge 33, and fine points 21 areurged by spring 26a against the end of the brush back. Registeringdevice 24 is then withdrawn or a spring (not shown) may be provided torotate it appended pivotally operated bristle catcher 39, the operationof which will be later explained.

Above assembly 34 is mounted an electrically operated vibrator 40 (Figs.1 and 7) adapted to give vibrations of small vertical amplitude to theresiliently mounted assembly 34. Magazine 3'! contains two supplychutes. and 42 (Fig.3) so .tha'tbristles B (not shown in this'figure,see Fig.

' 4 chute, may be included in each tuft of bristle in. the brushproduct. Weights WT (Figs. 9 and 10) may be provided to hold down theloose cutlengths of bristles, one length being in each chute 4i and 42.Box structure 38 (Fig. 8), containstwo magazine cylinders 43 and 44which are firm-- 1y fixed to shafts 45 and 46 and rotate therewith.-These shafts carry uniform meshing gears 41 and 46 (Fig. 7) which aredriven through a drive sprocket 49 (Figs. 10 and 11) on shaft 46, butnot keyed to it. Sprocket 49 is driven by chain 50 (Fig. 11). On theexterior face of sprocket 49 (Fig. l2) are spaced holes 4%. adapted toreceive engaging prongs on a slidable handle 5| (Fig. 13) which isattached to shaft 46 (Fig. 10) as by the screw 52 shown in Fig. 13. Theprongs on the handle are normally held in the sprocket holes by pressurefrom spring 53 But if desired, handle 51 may be manually retracted todisengage the prongs from the sprocket. Shaft 46 may thenbemanually'rotated. It is normally rotated by sprocket 49 driving throughsaid prongs on handle 5|, the handleillustrated' being attached to shaft46 (Figs. 10 and 13) by screw 52 which screws into a tapped and threadedhole 46h (Fig. 10) in the end of shaft 46.

To pick a predetermined number of bristles from the bristle holdingmagazine, cylinders 43 and 44 (Fig. 8) are provided with raised bandportions 54 and 55 (Fig. 14). In these raised portions are transversegrooves of a size adapted to receive one bristle only in a groove.Anynumber of grooves may be providedto a cylinder, 'In the presentexample six short bristles are ,picked from one compartment of themagazine and three long bristles from the adjoining compartment.Therefore in Fig. 14 six grooves are indicated on cylinder 43'and threegrooves on cylinder 44. It is of course understood that any number ofsuch grouping could be provided on the cylinders, a convenientarrangement being to have four groups of the six grooves on cylinder 43spaced 90 apart, and four groups of the three grooves on cylinder 44spaced at the same angle. The drive can then be synchronized to revolvethese cylinders 90 for each knot or group of bristles for each tuft tobe inserted and stitched in each hole of the brush back.

Bearing against the cylinders are doctor blades 4 56 and 51. (Fig. 8)which are so arranged as to 7 way 58 into notch .59 (Figs. 15 and 16)that exists 10) of two different lengths, one length from each withinclamp slide 60, one end of the bristles being supported in this notchand the other end of the bristles being supported in notch 59a (Fig. 15)in the pivotally operated bristle catcher 39. Bristles B bridge acrossthe gap between-these two supports. Bristle catcher 39 is adapted to beraised after the bristles are firmly clamped and held in notch 59 of theclamp slide 66 as will later be fully explained. Clamp slide 60 ishorizontally slidable in ways 6| (Fig. 17) cut in supporting blocks 62and 63. Two hold-down plates 64 and 65 hold the slide 60 within theways. In

the rearward portion of slide 66 are disposed'two cam slots 66 and 61(Fig. 15). There is a central channel 68 (Fig. 17) throughout the fulllength of clamp slide 60 and within this central channel slides a clampmember 69 (Fig. 15). Clamp member 69 has protruding pins 68b a nd 690that run within cam slots 66 and B1 in clamp slide 60 so that upon beingurged forward clamp member 69 first moves in a substantially horisarcasmF izon'tal ,aplane :so "that "Ithe :iront tongue rot athis --meniber 59amoves :out :over LbristlesJB that-have fallen into notches 159 :and 59a,rhenlmoves zdown "te -clamp the bristles Tin moizch 59.. iClamp unem-:heriitisiinkeditoIcamtfcllower arm .10 through .cam'fiollower -arm 11.0="(Fig.':1 5') continues to; move v torward 'clamp slide .50 is pickedup (when pin's 692) and "690 go to the :ends of their :slots) and also"moves forward so that bristles held within notch 59 are inserted,horizontally, through e. Wire loop L (Fig. 19 formed above a 2116161111thebrushback inamanner l-ater to be described. After inserting thebristles throughthe wire loop, eam follower arm 1 0 "'(Fig. '15) startsupon its return stroke. The tongue'1i9a of member 6'9 rai'ses during'theinitialmovement of the cam follower arm when the arm starts its returnstroke. h t the 'forward position of clamp slide 60 detent button 1 6,which was camm'ed out of notch "p'asses by ithe rpaw1 95.

'rshafit 09 at :avrelatively -.-slow velocity. Shaft .09

is connected with a shaft :90 .by coupling 9|.

Shait .90 is supported by hearing hanger .92 $115- pended from :deck'I0. *shaft .90 is.-also fastened to :a one-revolution clutch -93, having:a-zcontrol acam"94 which'is normally engaged by pawl 95 :(Fig. 11*)Pawl 95 :is ;;1iDl8d"-0O a solenoid =96 and .is pivoted on fixed :pin 98so'that -.on energizing the solenoid, the pawl iszlittedagainst -theten- ;si0n':of 'a spring I00 to-allow :controL-cam 94 to engage theinner mechanism :of the clutch and tdriveiclutch hub 99 (-'F1g.' 4').:Hub :99 .is keyed to "sha-fit i80 .on which is :ailso "mounted :aneedle rdrive cam III'I, bristle slidezcam .'I=9,-ind'exing$ignail :cam0-2, and :the worm :gear or worm :gear :speedtre ducerf8ltreferredzto-above.

isolenoid 29.6 .(=Fig. 1 L) Lis :deenergi'zed :as mu *be described,atter notch 1'03 nf :control roam :94 vrafter :tire "clutchfunctionsfa's atunit in drive shaft f80rior one :r'evolution, the pawl95".ree'ngages the match and disconnects "the clutch "in "the "usualmanner of in. one-'revolutionfclutch.

7 A cam follower 1103 (Fig. 4) is fastened to a vertical i-needleholding reciprocating "shaft I 04 (Fig. 21) which :reciproeates tonecomplete-stroke for 'each revol-ution'oi needledrive cam IOI,=cam I'OIbeing carried through one ='complete revolution for every stitch of themachine.

when the slide moved forwa-rd, has i dropped 'into notch "I! thusencouraging clamp s'lide 60 150 *remafi-n Finthe forward position untilpins 691) and 09c'reach the'rear ends *of "their-slots at which timeclamp 69 "has been fully retracted with-in clamp slide 50. Then theclamp slide-assembly 'lisreturned to the bristle chargingposition"corresponding "'to the limit or back stroke of cam 'ifollower"arm 10 in which position detent but ton I0 slips backin'to notchl5.

In moving "forward "the bristles --B (Fig. T5) eaiter theyhave'been-firmly clampedin the-notch 590i clamp slide 60*by lthetongue09a of member -69jthe pivotally operated bristle catcher 39, thenotch59a of which serves as a support for one end of the bristles before theyare securely clamped in notch 59, must be raised out of "the way. To dothis, bristle catcher 39 "has been 'providedwith'a projection'39a (Figs.1 9 and'20') on one side arm which projection acts asa cam surface tomove the bristle catcher upward to "the "position shown in Fig. l9when-rod-R, at-

tahed to-and reciprocating with clamps'lide 60, moves forward with theslide. the "tongue 09a has bristles B securely clamped 'inthe notch59and'hashorizon'tally inserted the bristles through wire loop L, "formedabove brush back 29. I

'Camiollower'arm 'I0issubs-tantially'a bell crank jpivotedabout pivot 11(Fig. 11). The lower'portion of this bell crank carries cam follower 18"which bears against the cam 19 seen in 'Fig. 4. 'Cam'follower arm 10 isalways urged to a rear position by compression "spring assembly Cs(FigsI'l'and 11). Profilecam -19 (Fig.4) is'keyed on'ishaft 80 whichdrives worm gear'spee'dreducer 91. The low "speed "shaft 82 '(Fig. '11)of'sp'e'ed reducer 8.I 'connectsby a coupling 'with' 'shaft '83 on theend of which isa sprocket 8*4. Sprocket 84 drives chain 50 which in turndrives sprocket 49 for the bristle feeder means above described.

-A "motor (not shown) drives worm shaft 85 "(Fig 4) of *worm gear speedreducer (06. as by be'lt 81andpulley 88 shown,"to 'drive the-low speedIn this position I Wirehamdlingmewns pin I01 passing through the postI05 and the slot, helps keep the shaft I04 in ,-,proper.aalign- .ment.Shaft I0'4 has a :hollow threaded extenqsion I08, "thewa-ll ofwhichispartly cut away to pern1itaccess to the hollow iportion throughopening 109. A further; extension N0 of shaft 404 containsneedleholdingmember III through which passes .hollow needle III'2.Compression bearing rclam ps H3 and nuts II-4 clamp the needle .to theholding member -I II 'so that the needle moves with reciprocatin :sha'ftI04.

The :upper end of the .needle :I -I 2 is .reduced 'in diameter forpassage through small drilledhole H5 in needle post cap I I6, and thelower-end of the :hollow needle I'I2 has its wall cutaway on-one side:fora short distancerfor wire'W (Figs. .2 and '24) to be (easilythreaded through. "The needle :nevervrises above *the top of post capHi5 (Fig. 21). but rslides within the'c'ap. 'As :stated above,this-needle'ishollow and thewireW'passes through :it zaxiall-yaa-sindicated in Fig. 24.

'In-theside ofnejedle I'I 2 Jissan open'notch 11 I into which projects:pinchbutton member I I9 to pinch the wire in the needle (Fig. 24). Thismember H8 is also :slidable laterallyin an opening/I19 in holdingmemberIII'I. Notch II! is .cut so that the bore of the hollow needle I:I-2 "isexposed. When the h ollowneedl H2 is threa'dby "screws I23. Screws 124through blocks 1.2.5,

held to needle post 'l05floy screws I26, provide 1 In the stitchingoperation, the cam surface of cam iI causes shaft I04 to rise its fullstroke during'approximately the first 75 of revolution of shaft 80." Atthe bottomv of the stroke, pinch button II 8 bears against block I21 andexerts relativelylittle pressure against the wire passing up through theneedle, but during the-rise of the needle, the button slides up alongthe 'iace-of slide clamp I20 and pinches the wire hard enough so thatthe .wire is forced to move with the needle and to be fed up throughslotted exit orifice I3I in needle post cap IIB. Prior to starting: themachine,'the operator threads wire W (Fig. 2) from spool S up throughthe needle (Fig. 24) and out the exit orifice 'I3I (Fig. 23) in needlepost cap I I6, and, prior to stitching bristles in each brush, feeds theloose end of wire through hole I32 (Fig. 23) for a short length andpulls it taut across the top of the stationarypost cap, the short-lengthof wire projecting from the exit of hole I32 in the side of the post capbeing bent down the side of the post cap and post to anchor this looseend of wire. Friction of the wire in hole I32, the sharpness of thebends in the wire at the entrance and exit of hole I32, the length ofWire pulled through hole I32 and the angle at which the wire is pulledby the downstroke of the needle or by the direction of the movements ofthe brush back all prevent this freeend of .wire from being drawn intoand through the holes in the brush back. 7 When this end of wire is soanchored, the needle forces the portion of wire between the top of theneedle and-the top of the post cap up through slotted exit orifice I3Iand causes a Monte form on the top of the post cap and forces this loopthrough the hole .30 (Fig. 21) in the brush back 29. Holes 30 arepreferably shaped as the one shown in Fig. 21. At the top of the needlestroke, the loop reaches its maximum size above the brush back andbristles are caused to be inserted by the contour of cam I9 '(Fig. 4)as'has been described. Shaft I04 drops to the bottom of its stroke afterapproximately 180 of revolution of shaft 80 and has no motion during theshafts remaininghalf-revolution.

At the start of the needle stroke, the pressure exertedby spring'biasedblock I21 on button 7 H0 is enough for the button to pinch the'wiresufiiciently to prevent it from moving in the needle as the loop beginstoform. The wire is more firmly pinched when the button leaves the blockI2'I and-moves up along the face of slide clamp. I20. The wire loop isnow to :be pushe through a hole 30 of the brush back. 7

In moving upward to form the loop and to insert it through a hole 30 ofthe brush back the tendency of the wire to slip in the needle increasesand the wire must be tightly held against such slippage. As indicateddiagrammatically in Fig, 24, a force FI sufiicient to do this is exertedby slide clamp I20 against the pinch button II8 when the button moves upalong the faceof the slide clamp. As the needle continues to move upwardit forces the loop through a hole 30 (Fig. 19) in brush back 29flandincreases the size of the loop until the vtopof the stroke is reached.As has been described, the bristle inserting -mechanism is synchronizedto insert a bunch of bristles into the loop to half the bristle length.About at this point the downstroke of the needle begins andduring themajor portion of this downstroke force FI (Fig. 24) exerted by the slideclamp I20 against the pinch button forces the button to hold the wiretightly enough to tighten the loop (Fig. 19) around the bristles anddraw the middle of the bunch'inserted into the hole in the brush back toform and anchor a tuft on the brush back. I

Provision must be made to release some of .the pull on the wire by theneedle after the-tuft has been firmly seated and anchored in the hole..To do this, spring pressed block I2! is provided which exerts a forceF2 (Fig. 24), less than force-Fl, against the pinch button I I8. -Bythis means, the firm pinch on the wire W during the major portion of thedownstroke of the needleis released'at the proper point, i. e. whenbutton I18 reaches said block, and the needle is thus allowed to movedown the taut wire. Spring pressed block I2'I thus provides for releaseof the heavy grip on the wire necessary in the seating of the bristlesand permits passage of the wire through the needle to replenish Wirepermanently left in the base of the hole and the wire used when movingthe brush from onehole to the next for consecutively stitching in thebristle tufts.

There should preferably be little distance between the brush back 29(Fig. 19) and the top of the needle post cap IIB so that wire pushedupward by the needle will be doubled through the registering hole in thebrush back. In the formation of the loop it has been found 'very usefulto slot the exit orifice I3I, as indicated in Fig. 23, to prevent theloop from being formed at other than right angles to the bristles beinginserted through it, as indicated in Fig. 19. In the present machine theneedle rises almost to the top of the post cap. above which height thebore in the needle cap post IIS (Fig. 23) is narrowed down in atransverse direction and flared out longitudinally so that Wire. passesthrough a slotted exit orifice of cap post II 6. The slot may beapproximately .090 by .015 inch.

After the needle has reached the bottom of its stroke the brush backclamping assembly is moved by indexing mechanism to be described so thatanother hole 30 in the brush back 29 is in register with theexit orificeI3I (Fig. 23) in the needle post I I8 and the needle reciprocates againto form another loop and pull this loop tight about the bristles whichare inserted through it to form another tuft on the brush, repeating theoperation until a row of holes (Fig. 6) in brush back 29 have beenstitched. .The brush back clamping assembly is then partially rotated bythe indexing mechanism to be described and another row of holes arestitched.

Having the exit orifice I3I (Fig. 23) in post cap IIG slotted isparticularly useful when it is necessary for the continuous length ofwire, which is drawn over the back of the brush as the tufts arestitched, to pass from one .row of holes to the next. When the Wire isforced up the loop is encouraged to form and square itself to thedirection of insertion of. the bristles.

I ndexing Lmechanism 29F 21-) in needle. post: cap I;I6;.but-afterstitching a: tuft. of. bristles. in this: hole: thehrush; Ioacl:v is

moved by: the machine to .bring' the next hole.

30b. (Fig- 6). in registrationwiththe; exit orifice... In addition; to:this movement,..the brush; back: is. rotated on; completion. of: one;row of, holes.- stitched to. start another row. This: is; done: by: thefollowing-mechanism.

Main. shaft" 28' (Fig. 4)- of; the: machine, on; which head stock. 20;of. the brush.- clamping: 3S7: sembly I8; is. fastened extends: throughbearing. support I33 and terminates; within sleeve I44? in. bushing I34a(Fig. 3):. Bhebushing I3Aa.a1lo.ws; theshaftto'slide snuglyin thesleeve.A-threaded stud. I34bextends fromv main shaft 2 8-through bearing.sumgort,v I34: and a threaded. collar' I340: Mounted .on the main shaftis a master; template; assembly I35 inthe; face. I31 (Fig. 25.): ofwhich arev holes I36- ofi identical alignment as. holes. in-brush back29.

Main shaft 28.- (Fi r; 4-),- has;v a long keyway L38.

grooved1 in it (Big 49-. A. feather key; I39, keys a;--

a; bearing M0, on the: end: portion.- I.4I of master template. assemblyI135; to shafit 28; Feather'key I -39;ridesv in keyway I138. in the.long-itudinalmove ment of the. template. On the other end, I42 (Figs; 3and 25) of the template ELSSBmblY-a. is a collar; I 43 threadedtoreceive? an externally.

threaded sleeve I44. which concentrically fits.-

round main shaft 2,-8. Sleeve I44 is. threaded:

its; full lengthand extends. throush'collar- M3 athree.-ph'ase.- typeand reversible by. crossing. any.

pair. of. lead wires. asbythrough. a reversing linestarter, drives shaftI- (Fig. 3.) of the worm gear speedreducer I.5.3.

Threaded. collar I340. is. firmlyfastened. tosleeve |.4 ,4,. and .is}internallythreaded; to. engage. with the threads. of-. stud. I342)...Revolution. of. sleeve I by. meshi-ng. gears. I46. and. I41; urgesthezmaster template I35. to movein an axialdimotion and: simultaneouslyurges; main. shaft- 28 to-movein. the. same axial direction but at. a,

different. rate.. as stud: [Mb-and; sleeve I44. are-- threaded so thatthe main/shaft. 28- moves. in ratio with the; template.

Partially supporting; the. suspended weight of the master templateassembly I35. is roller I55. (Fig-z. 26-). which is attached to leverI551 pivoted at I .58 Roller L56 isbiased against-the master template,assembly by spring I59. attached. to. the.

endoi lever I51. and anchored to the deeliof the. machine.

An indexing. pin. assembly I 60, has. a supporting.

stand. IGI. in the. base of'which is, a pin I52;

Lever I631 pivots on pin I 62. One end of lever I63 has rigidly attachedto it an extension [63a connected with a solenoid I" which whenenergized'aetuatesj lever arm I63'to pull indexing pin IS'i out from thetemplate-.-

pin- I65 inthe template-hole; A spring I-GFmay be provided to assist thesolenoid F64 to movethe Two micro-switches I68 and I6 9= are-- leverI63. so mounted on the supporting stand I 61 that movementrot: the piminand out of -'thetemplate: Switclr I681.

alternately operates. the: switches.

Spring I66 holds the being;- operated; when. the pinv is in-,. and:switcher, I69 being operated the out-positionr The; machine hasvariousjsw i fihesin addit on these. tWEQLt B- understanding; o whichcanzbe had; by; reference. to-the: w na d a ams ofifis; 27,; otherfigures... how.ever..v will; be mentionedv to. locate the-switches and.other 'electrical-elements onithe maehina, Switch; IP10! is anor-m'allyopew miero-switclr suspendedironr deck-,1 I 0; and. closed momentarilbygindexing signal cam I07; ('Fig ..4),-

when the needle hascompleted its stroke; ape

proximatel one-half revelation. ci-shartz 8.0;.

. Switch I 12 itEi i 1).. isamanually; operatednor-z mally. open.mierorswitch; located near; the needle post-.1415. As shown in he'diaarmrthis. switch; isean. alternate oicamzoperated-switch |:1' u,;e1thr.;switch." adapted. t,o--. complete a. circuit. throuzglrtimer-delay'relaxooil. I1.-3.-..

'IZime-delay relay coil- I.'I-3:has;heen foundinecess sary as the, cam l'llz on;the:drive ;sha-ftilill. will not h01d::switch I110.c1osed.-loe;enoush for the index.- Di-n to com-motels: withdraw from the; master;template. -'I%ime,-delay relay Q0113] holds power: relay m :closed;which in turn .-enersizesz indexe ing pirrsolenoid: IE4 (=Fia.. 26;-).which,..as described; nulls nin l.-fi;fi;frqm.the;temrlate. When-1111x;ispulled.fromthetemolate it closesnormalllr nem micro switch Hi9 which.energizes; rowerr lasf. Ire. Gluten 1:50.: (see 3 thmuah which. meshing;gears; I 4&- and. I 4.1; are dr ven. is n aged; and disengaged: by leverI16 pivotedet. I'I:I=. amt attached to and operated by clutch-actuating;solenoid; I'I8.; Aspring. II -9 normally holds-the c ut nh disasedaposition. power;

relay; I115; is energized; however, clutch; actuating;

time for the template-face to move under the;

x pin. When-- ind xina pin. r65. falls into the template-111016;;switch:t6;8.=;opens;. and-switch; lee. closes. clutch I50 to disengage,

When the; switch I6B is dosed. by. thei-ntleere h1g ping I55 moving; fonward it. menswear-solenoids;

as. (Fi 1.1 which the-pawl: flirallowinas. control cam; St to: operatevthe; cne-revohition; clutch. 93;? 4). and drive shaft. Atz'thez.

completion of.-'the-st.noke,.o.f solenoid. 96; normally closed.micro-switch; I180 (Fig.2. 121-); caaisemto.

open and deenergi-ze. relay m. Denergizing. ree lav r851: allows;normally: open relaycontactszlmi andv raa to fallz. open whichimmediately deener-- izessolenoid 9.61 andrelay I' BIi. solenoiirflmhowaever. holds. the: one-revolution; clutch. pawl; 95.-

open long enough. for thecontrollacam; 95 toistartz its revolution.normally: closedicontact on.

switch. I;68.='prov,ides=a circuit; throug rel ir the template? a.circuit; is: formedp'througlr relay;

The. coming; or. switch 1:63. causes the;

Whenthe index. pin." I is;withdrawn to the starting position and switchI84 manually closed before a new brush can be inserted and stitched.Switch I84 is connected to switch I86 (Fig. 1) accessibly located on thedeck for manual operation. Starting and stopping of the entire machinestitching and indexing control circuit i's provided' by switch I86.Located in back of r the master template and at the extremities of itstravel positions are switches I8'Iand I88 (Fig. The momentary closing ofeither switch energizes thesequence relay coil I89 and with successivemomentary energizations of this relay coil,'relay contact I98 isalternately .closed and opened. Closing of relay contact I90 energizesthe-indexing drive motor reversing control relay I-9I'; :Indexing drivemotor I54 (Fig. 1) is re-- versed-by crossingany pair of lead wires asis done through the reversing line starter I92 of which. coil I9i isapart. The motor I93 (only shown in the'diagramhto drive shaft 88 (Fig.4), which in turn drives the needle, may be startedandstopped by amanualswitch I94 also accessibly located on 'the deck, (see Fig. 1). Powerline conductors I95, I96, and I9'l- (Fig. 1), leading from a source ofelectrical energy, may bechannelled through a main control switch I98which is shown in Fig. 1 but omitted from the wiring diagram. r

In the practice of this invention there is provided a simple andeificiently operable brush making machine which in continuous automaticoperation requiring o'nlythe manual positioning on the machine of abrush handle having tuft holes therein and the removal of the finishedbrush from :the machine, acts otherwise automatically: (1) to separate ameasured number of short bristles from a bristle holding magazine andfeed them horizontally into a grooved insertion mechanism whilesimultaneously forminga wire loop or noose in a strand of continuouswire; (2) to then-force the wire loop up throughthe first tuft hole inthe brush handle and increase the sizeof the loop to readily receive abundle of bristles which is brought forward still horizontally andinserted into the loop for a distance of one-half the length of thebundle; (3) to draw the loop tight about the middleofthe bundle byholding one end of the loopsecure while pulling on the other to pullthe, middle portion of the bundle .downinto the tuft hole and raise theend portions to form a tuft of bristles on the brush; and (4) then toindex to the next tuft hole and repeat the same stitching operationuntil all of the tuft holes in the handle have been filled with tufts ofbristles, and at such time'to stop so the operator maycut the strand ofwire; remove the finished brush and insert another brush handle.

, Having fully described the invention, I claim: 1. Amachine for makingbrushes of the Wire drawn type, such machine comprising a support forthe brush back withits perforations to receive the bristles, means tomove said support to position such perforations successively in the samepredetermined position to receive a bunch of bristles, a bin for thebristle supply, a bunch forming support at the outlet of the bin, means12 to intermittently feed .a measured'nu'nib'er of bristles from the binand deposit them in abunch on said support and at a position at oneside. of said predetermined position, a binding thread supply holder, aneedle in the form of a tube through which a thread from such supply maypass through and out one end and be held to form successive loops whenthe needle is reciprocated, anchoring means beyond the exit point of theneedle to hold the end of the thread, means to reciprocate the needleand form successive loops when the thread is held against movement inthe needle and held by said anchoring means whereby the thread maybe'pushed inloop form through the brush back perforation hole in saidpredetermined position, said needle being mounted for its movement inline with such hole in said position, the thread supply holder beingmounted to yield thread to move with the needle as the latter is movedtoward such a hole, a bristle bunch clamping and feeding device to clampone end of a bunch of bristles, said device having means to push thefree end of the bunch for half the length of the bunch through a threadloop formed above the brush back hole, a holding, device to preventrelative movement of the thread inside the needle as the latter is movedtoward said hole to form said thread loop and to allow the thread tobepulled through the needle in restricted, limited movement when theneedle is moved away from the hole whereby one side of a loop may beretracted and the loop drawn tight against the bristles to draw theminto tuft formation and anchor the engaged portion of the bristles intheir hole. 1

2. A machine for making brushes of the wire drawn type, such machinecomprising a clamp support for the brush back with its perforations toreceive the bristles, means to move said clamp support to position suchperforations successively in the same predetermined position to receivea bunch of bristles, a magazine partitioned to hold two lengths ofbristles and having an inlet and outlet to eachpartition, a rotarydevice at each outlet having a cylinder with grooves in raised portionsthereon to pick a predetermined number of bristles from its magazinepartition and a reciprocating trough at one side of said predeterminedposition to collect the bristles picked by each rotary device, a bindingthread supply'holder, a needle in the form of a tube through which athread from such supply may pass through and out one end and be held toform successive loops when the needle is reciprocated, anchoring meansbeyond the exit'point of the needle to hold the end of the thread, meansto reciprocate the needle and form successive loops Whenthe thread isheld against movement in the needle and held by said anchoring meanswhereby the thread may be pushed in loop'form through the brush backperforation hole in said predetermined position, said needle beingmounted for its movement in line with such hole in fsaid position, thethread supply holder being mounted to yield thread to move with theneedle as the latter is moved toward such a hole, a bristle bunchclamping and feeding device to clamp a bristle bunch in said trough,said device having means to push the free end of the bunch of bristlesthrough a thread loop formed by the needle above the brush back hole tohalf the length of the bristle bunch, yieldable means projecting intothe needle tube to prevent relative;

movement of the thread inside the needle as acoassa T3 the latterismoved toward said hole to' form said thread 100p and to allowthethreadtoflbe pulled through the needleinrestricted:limited movementwhen the needle is movedaway from the hole, wherebyone side of a loopmay beretracted to draw the-looptight against thebristles- 3. A machinefor makingbrushes ofthewire:

dravl'l-n-type, such machine comprising a support for the brush backwith its perforations to re ceive the' bristles, said support beingmovable to positionsuch perforations successively in the samepredetermined positionto' receive a bunch of'bristles, a'bin for thebristle supply, a-bunch forming support at the outlet of thetbin; meansto intermittently feed a measured number ,1 of. bristles .ifrom thebinrand' deposit them in-va bunch on saidsupp'ort' and at a position atone side or said predetermined position, a-.:b'indihg. thread supplyholder} aneedle' in the form of al tubethroughwhieh althread from suchsupply may pass through and out one end and be held to form successiveloops 'whenthe-needle is reciprocated, a stationary post with a boretherein to guide the needle, means on the needle post to secure the freeend of the thread issuing from the needle, means to'reciprocate theneedle in the post and form successive loops when the threadis so heldin-the needle and the free end so anchored outside whereby thethread'may be pushed in loop formthrough the brush back perforation hole insaid predetermined position said needle being mounted for its movementin line with such hole in said position, the thread supply holder beingmounted to yield thread to move with the needle as the latter is movedtoward such a hole, a bristle bunch clamping and feeding device to clampone end of a bunch of bristles, said device having means to push thefree end of the bunch through a thread loop formed by the needle abovethe brush back hole for half the length of the bunch, a holding deviceto prevent relative movement of the thread inside the needle as thelatter is moved toward said hole to form said thread loop said holdingdevice having means to allow the thread to be pulled through the needlein restricted, limited movement when the needle is moved away from thehole, and means to release the bristle clamping device and retract thefeeding device after said needle has drawn the loop tight against thebristles and drawn the bristle bunch into tuft formation and anchored itin the hole.

4. A machine for making brushes of the wire drawn type, such machinecomprising a support for the brush back with its perforations toreceivethe bristles, said support being movable to position such perforationssuccessively in the same predetermined position to receive a bunch ofbristles, a bin for the bristle supply, a bunch forming support at theoutlet of the bin, means to intermittently feed a measured number ofbristles from the bin and deposit them in a bunch on said support andat'a position at one side of said predetermined position, a bindingthread supply holder, a needle in the form of engages the center of theI4 its'wall at oneipoint to exposetherboresa pineh" button projectingsubstantially perpendicularirto: saidneedle into said opening toslidethereinand exert pressure againsttthread passingiaxiallythrough the"bore, spring biased means to force: the pinch button into a pressureexert-ing est: tion prohibiting movement of the binding thread in thebore; and an'o'ther spring biased means to exert less pressure on thepir'ich: button" and allow movementof the binding thread in the: bore,means i to reciprocate: the needle. and form" successive loops when the:thread heldagainstmovement in the needle and-at an anchoring pointbeyondthe exit point of theneedlewhereby the thread-maybe pushedinloop'formthro'ug the brush b'ack; perforation hole in said prede termined'position, said needle being mounted:- for its movement in linewith suchhole in said osition,- the thread supply. holder being: mounted to yieldthread to move with theneedle 'a's the latter is moved towardsucha-liole, a -bristle bunch clamping and-feeding device to clamp:

one end of the bunch to the forming support, saiddevice having means topush the freeend of the bunch throughga 'thread loopformed by'- theneedle abov'e' the brushbackhole: until half thelengtl-i or the bunchextends on either Sid- 0f the p,- me8 fl'-st6 release the (11931 11 83111 of bristles, means for" projecting 'loop of wi through an opening mabrush tack: ificIHdmg a needle post savings needlein: the fdrm ofi atuhe reciprocable in said post and through which said wire is passed andanchoring means at the top of said post for a free end of said wire,clamping means engaging one end of the knot of bristles, means toadvance the clamp and push the knot of bristles halfway through saidloop, means to release the clamp, and means to retract one side of theloop to draw the engaged portion of the bristles into the openingincluding wire holding means on said needle engageable by said needlepost.

6. A machine for making brushes of the wire drawn type, comprising meansfor forming a knot of bristles, means for projecting a loop of wirethrough an opening in a brush back including a needle post having aneedle in the form of a tube reciprocable in said post and through whichsaid wire is passed and anchoring means at the top of said post for afree end of said wire, clamping means engaging one end of the knot ofbristles, means to advance the clamp and push the knot of bristleshalfway through said loop, means to release the clamp, means to retractone side of the'loop to draw the engaged portion of the bristles intothe opening including wire holding means on said needle engageable bysaid needle post, means to move the brush back lengthwise to align asecond opening therein with the loop forming means, and means to rotatethe brush back to align another opening therein with the loop formingmeans.

7. A brush making machine comprising means for forming a knot ofbristles, means for projecting a loop of wire through an opening in abrush back, clamping means engaging one end of the knot of bristleshalfway through said loop, means to release the clamp, means to retractone side of the loop to draw the engaged portion of the making brushesor drawn type, comprising meansror forming a knot start the sleeve andcollar rotating at aecasee;

7 i5 bristlesinto the openin means. to index a perforated brush backtosuccessivelyalign its open-t ingsnwithethe 100p forming means, saidindexing,

' tainingmeans to engage the shaft for partially rotatingsame, meanstorotate said threaded.

, sleeve and its internally threaded collar to move the templateaxiallyon the sleeve and to, move the'stud and shaftproportionately, in thesame direction, and means to engage and disengage the template openingssuccessively and stop and predeter; mined intervals of time, i

, 8,;In a machine of the classrdescribed, a stationary needle post pandacap on the post, a reciprocable needle-movable in the post, anelongatedslot through the needle post cap,rthread holding means-ontheneedle, anchoring means,

for the free end of thread from the needle, andv means to reciprocatethe needle within the post and force a loop of thread up through theelongated slot in the needle post cap when, the free end of the-threadis held against movement, said elongated slot having a depth suificientto guide said loop and prevent it from twisting,

r 9. Ina machine of theclass described, a bristle, supply vbin, bristleinsertion slide ways and a.- reciprocable bristle slide movable in saidways-, means to pick a predetermined number of bristles.

from the bin and deposit them in a bundle on the slide, a bristle clampand means toumove.

said clampv over an end of a bundle on the slide to clamp the bundle tothe slide, detent means in one of the ways to prevent the slide frommovinguntil the bundle end is clamped to it, and means to overcome saiddetent means and move said slide forward when saidbundleend is clampedto the slider 10. In a machine of the class described, a bristle supplybin, a reciprocable bristle insertion slide, a hinged bristle catchergate spaced: from.

said slide, means to pick a predetermined number of bristles from thebin and deposit them onthe slide and gate, one end of a bristle beingsupported by the slide and the other end by the gate, means to clamp thebristle ends on the,

slide, means to reciprocate the slide, means to.

liftthe bristle gate as the slide moves forward,

and means to release the clamp at the end .of the forward stroke of theslide. 1

. i RICHARD B. WILSON.

' REFERENCES CITED The following references are of record in the file ofthis patent: V

UNITED STATES PATENTS Number Name Date 4 450,863 Gutsmuths Apr. 21,1891469,479 Kennedy Feb. 23, 1892 759,465 Nielson May 10, 1904 Wooster June19, 194 5:

